Allen-Bradley 1746-NIO4I is a SLC 500 analog combination I/O module that provides two differential analog input channels and two analog current output channels in a single 1746 module. Each input channel can be configured as either voltage or current input, with inputs not individually isolated, while the two outputs are current-output channels. This one-slot module plugs into a SLC 500 backplane, enabling compact integration of analog sensing and actuation within legacy automation installations. Rockwell Automation lists the 1746-NIO4I as discontinued as of April 29, 2021.
